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Victor Letzelter

7 accepted papers

2026

Multiple Choice Learning of Low-Rank Adapters for Language Modeling

ICML 2026poster

We propose LoRA-MCL, a training scheme that extends next-token prediction in language models with a method designed to decode diverse, plausible sentence continuations at inference time. Traditional language modeling is an intrinsically ill-posed problem: given a context, multiple ``futures'' may be…

Cited by 0SourceScholar
2025

Annealed Winner-Takes-All for Motion Forecasting

ICRA 2025

In autonomous driving, motion prediction aims at forecasting the future trajectories of nearby agents, helping the ego vehicle to anticipate behaviors and drive safely. A key challenge is generating a diverse set of future predictions, commonly addressed using data-driven models with Multiple Choice

Cited by 3SourcecodeScholar
2025

Winner-takes-all for Multivariate Probabilistic Time Series Forecasting

ICML 2025poster

We introduce $\texttt{TimeMCL}$, a method leveraging the Multiple Choice Learning (MCL) paradigm to forecast multiple plausible time series futures. Our approach employs a neural network with multiple heads and utilizes the Winner-Takes-All (WTA) loss to promote diversity among predictions. MCL has…

Cited by 0SourcePDFScholar
2024

Annealed Multiple Choice Learning: Overcoming limitations of Winner-takes-all with annealing

NeurIPS 2024poster

We introduce Annealed Multiple Choice Learning (aMCL) which combines simulated annealing with MCL. MCL is a learning framework handling ambiguous tasks by predicting a small set of plausible hypotheses. These hypotheses are trained using the Winner-takes-all (WTA) scheme, which promotes the diversit…

2024

ManiPose: Manifold-Constrained Multi-Hypothesis 3D Human Pose Estimation

NeurIPS 2024poster

We propose ManiPose, a manifold-constrained multi-hypothesis model for human-pose 2D-to-3D lifting. We provide theoretical and empirical evidence that, due to the depth ambiguity inherent to monocular 3D human pose estimation, traditional regression models suffer from pose-topology consistency issue…

2024

Winner-takes-all learners are geometry-aware conditional density estimators

ICML 2024poster

Winner-takes-all training is a simple learning paradigm, which handles ambiguous tasks by predicting a set of plausible hypotheses. Recently, a connection was established between Winner-takes-all training and centroidal Voronoi tessellations, showing that, once trained, hypotheses should quantize op…

2023

Resilient Multiple Choice Learning: A learned scoring scheme with application to audio scene analysis

NeurIPS 2023poster

We introduce Resilient Multiple Choice Learning (rMCL), an extension of the MCL approach for conditional distribution estimation in regression settings where multiple targets may be sampled for each training input. Multiple Choice Learning is a simple framework to tackle multimodal density estimatio…